US Bridges

Memorial Causeway over St.Johns River Overflow

Fair

Putnam County, Florida · SE Corner of US17 Br/St · Structure no. 764037

Built
1940
85 years old
Condition
Fair
inspected March 2024
Type
Arch - Deck
Concrete
Length
31 ft
1 main span
Daily traffic
51
2024 count
Owner
County
County Highway Agency

About this bridge

Memorial Causeway over St.Johns River Overflow is a concrete arch - deck carrying Memorial Causeway over St.Johns River Overflow in Putnam County, Florida. It was built in 1940, so it is 85 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 51 vehicles a day, projected to reach 88 by 2042. The structure is 31 ft (9.4 m) long and 38 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesMemorial Causeway
CrossesSt.Johns River Overflow
LocationSE Corner of US17 Br/St
RouteCounty Highway 0
StateFlorida
Coordinates29.64417, -81.61642
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 14 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.5 US tons
Inventory rating42.8 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span31 ft (9.4 m)
Deck width38 ft (11.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2024)
Projected traffic88 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRelief for waterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Memorial Causeway over St.Johns River Overflow built?

It was built in 1940, making it 85 years old in 2025.

What condition is Memorial Causeway over St.Johns River Overflow in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does Memorial Causeway over St.Johns River Overflow carry?

About 51 vehicles per day (2024 count).

How long is Memorial Causeway over St.Johns River Overflow?

The structure is 31 ft (9.4 m) long with a longest span of 31 ft (9.4 m) and a deck 38 ft wide.

Who owns Memorial Causeway over St.Johns River Overflow?

It is owned by the County Highway Agency.